Car heater and defroster



jan. 3G, H945, F, M. YOUNG 936,392

CAR HEATER AND DEFROSTER Filed Feb. 8, 1943 4 Sheets-Sheet l IN VEN TOR.

Han 3G w45 F. M. YOUNG Zg CAR HEATER AND DEFRSTER Filed Feb. s, 1945 v 4sheets-sheet 2 IN VEN TOR. 45 Feoz UNG ATTORNEY Jan., 30, 1945. F. M.YOUNG 35,392

CAR HEATER AND DEFROSTER Filedreb. 8, 1943 4 sheets-sheet 3 E /F/Q 6 r"I JNVENToR. i FEE@ M. Vom/6 f7@ g BY.

Jam. 30, 1945. F, M, YOUNG I 36,392

CAR HEATER AND DEFROSTER Filed Feb. 8, 1943 4 Sheets-Sheet 4 9 50 HG. Q

. F/: J0 f W INVENTOR. HG 4.5

A?" 70e Hav n Patented Jan. 30, 1945 y UNITEDA STATES PATENTl omer.

assassz can naam AND DEFRos'rEa Fred 1v1-.Young mine. wis.

Application February 8, 1943, Serial No. 475,134

3 Claims.

A further object of my invention is to provide` means whereby'the lowpressure large volume fan will discharge thev air in the inclosure andthe high pressure fan will discharge the air in one or two ducts, oneduct being adapted to conduct heated air to the windshield and the otherbeing adapted to conduct the air to some remote point in the inclosure.

A still further objectl of my invention is to provide a heater wherebythe capacity of the cage type fan may be arra'nged to discharge apredetermined portion of the total volume of thev air drawn through thecore.

Another object of the present invention is to provide a heater of theclass described which is efcient, simple, light, neat in appearance andeasily manufactured at low cost.

The above recited objects are accomplished by means of parts,combinations of parts, or their equivalents, and mode of operation, ashereinafter set forth and claimed and shown in the accompanying drawingsin which:

Fig. 1 is a transverse sectional view of my improved device taken online I-I of Figure 2.

Fig. 2 is a sectional view of the device taken on line 2 2 of Figure 1.

Fig. 3 is a front elevational view of the heat exchange core used in mydevice as shown in Figure 1.

Fig. 4 is a sectional view of the device shown in Figure 3, taken online 4-4 of this figure.

Fig. 5 is afront view of my device illustrating two outlets on the cagetype fan.

Fig. 6 is a transverse sectional view of a modication.

Fig. 7 is a sectional view taken on line 1--1 of Figure 6.

Fig. 8 is a front view of the core used in the design shown in Figure 6.

Fig. 9 is a sectional view taken on line 9-9 of Figure 8.

Fig. 10 is a sectional view taken on line IO-IU of Figure 8.

Fig. 11 is a front view of the device shown in Figures 6 and '7 whereinboth of the cage fan outlets are shown as used for warming thewindshield.

Fig. 12 illustrates fractionally a further modiflcation.

As illustrated in Figures 1 through 5, the core,

which 'in its entirety is designated by reference character A, comprisestwo annular units (see Figures 1 and 4) each comprising two headersII-II and I2-I2 having tubes I3 forming operating connectionstherebetween. The tubes are provided with closely spaced fins Il.Headers II are provided with inlet or outlet connections I5-I5 andheaders I2 are provided with inlet or outlet connections I6-I6. Theseconnections may extend rearwardly through the cowl board I1 of thevehicle.

Headers II and I2 are turned en'ough so the I connections are spaced andso one core may be served by one cylinder block of a V-8 engine and theother core by the other block of the engine (see Figure 3) or whenserved by a straight line engine, adjacent tubes can be.connectedtogether for the purpose.

I provide a motor, which in its entirety is designated by referencecharacter B and position the motor concentrically within the core asillustrated. Closely spaced annular members IB-IS are positioned asshown in Figure l, these members being separated by sleeves I9.

I provide a front annular plate 20 having a forwardly turned ilange 2ladapted to answer as a shroud for the impeller fan blades. The fan, inits entirety, is designated by reference character C. I provide a rearannular plate 22. Plates I8, 20 and 22 extend past the outer edge ofcores A and have openings through which spaced bolts 23 extend.

AtA the forward end of the device and attached in any suitable manner toplate 2li, I provide a forwardly and then inwardly extending member 24having an opening about the inside diameter of member 2l and in thisopening, I preferably provide an air deflector member 25 having a numberof air directing blades 2B. Deflector 25 ts in the rear of the openingin member 24 and is concentrically held by means of spaced bolts 21which extend through anv annular ring 28, these bolts having Springs 29and nuts 30 so member 25 may beturned and held in any desired position.

Members I8 are provided with forwardly and rearwardly extending flanges35-35, their outer edges extending parallel to and in juxtaposition witha number of spaced projections 3'6 and being secured to theseprojections by means of washers 31 and bolts 38.

Washers 31 are preferably made from synthetic rubber and designed sothere is no metallic contact between the flanges and motor; thus toabsorb the noise set up by the vibration of the motor and fans. Iprovide a rear plate 39 through which bolts 23 extend.

An outer housing wall 42 is provided which answers as a spacer betweenmembers 22 and 39 and is shaped as illustrated in Figure 2 havingoutlets 43-43. The entire assembly is held together by means of bolts 23and nuts 4|, the bolts extending rearwardly through the cowl board l1. Adisc member 44 is provided with a suitable hub which is secured to therear end of the motor shaft having preferably the shape shown inFigure 1. On the outer periphery of this member I mount. a suitablenumber of blades 45.

Members 45 on their forward edges are secured to an annular plate 46;thus to form a cage type fan which in its entirety is designated byreference character D. Fan C is shown superimposed by dotted lines inFigure 2. It will be seen that cage type fan D and impeller fan C willcreate a partial vacuum within the core and cause the air to move in thedirection indicated by double pointed arrows in Figure 1, dischargingthe air forwardly through member 25 charge the air at a greater pressureand velocity than fan C and in the design shown in Figure 1, the twofans will discharge about an equal volume of air.

The air from one of outlets 43 will generally be sufficient for warmingthe windshield and the other outlet 43 may be connected to a duct whichextends t the rear of the inclosure or in any other desired place in thevehicle.

It will be seen that with my improved heater, a low volume of air may bedischarged directly into the inclosure the same as with the conventionalcar heater and a special fan is provided for high pressure so the airmay be discharged as above recited.

In Figures 6 through 11 I illustrate a modification wherein similarparts are designated by identical reference characters and numerals. Inthis modication there is but a single core comprising two headers 50-50which are operatively connected together by means of tubes l, preferablytwo rows deep and three rows longitudinally and having closely spaced ns52. In this design, the inlet and outlet tubes .53--51'2l extendrearwardly through members 22 and 54 in the position illustrated inFigure '7, member 54 acting as the rearside inclosure for the fansimilar to member 39 in Figure 1. The motor of this modiiication isdesignated in its entirety by reference character E. The front of thismotor and the core are provided with parts which are similar to thatshown in Figure 1.

An annular plate 55 is provided having a forwardly turned ange 56 on itsinner edge to which a tube 51 is secured as illustrated, the tube beingsecured at spaced intervals to motor E by means of washers 58 and bolts59.

I provide a disc 60 having a suitable hub for connection to the rear endof the motor shaft as illustrated and mount on the outer periphery ofthis member spaced blades 4,5 which are secured to member 60 and toannular ring 46 forming the rotor of `a cage type fan.

In this modification, bolts 6I extend through the cowl board of thevehicle and through the side plates of the cage type fan as in Figure 1and having nuts 4| so the entire assembly may be held together and tothe cowl board l1 of'the vehicle.

Plate 55 is provided with a number of openings 63 providing a passagewayfor the heated air into the cage type fan and plate 60 is provided witha number of relatively small openings 64 providing means whereby a smallvolume of cool air may pass forwardly around the motor as indicated bysingle pointed arrows; thus to cool motor E similar to the cooled airwhich moves inwardly between plates I8 in Figure 1 for cooling motor B.

In Figure 12 I illustrate fractionally a further modification whereinmotor E is secured to headers 50-50 by means of two brackets 65-'65 (onenot shown). Brackets 65 are secured to the headers by means of brackets66 by bonding or otherwise. In other respects, this structure is similarto that shown in Figures 6 and 7. In this design, the cage type fan maybe made considerably wider than that shown in the other figures and thehousing made similar to housing 42 except it may be wider. Clearly inthis design, more of the heated air is available to warm the windshieldand heat the car inclosure. One of the outlets of the cage type fan issimilar to that shown on the right side of Figure 5.

It will be seen that the motor illustrated in Figures 1 and 6 will becooled by outside air, that a large volume of heated air at low pressuremay be discharged forwardly from the unit and that any desired volume ofheated air at high pressure can be discharged from the cage type fan.

Having thus shown and described my invention, I claim:

1. A device of the character described, comprising an annular heatexchange core, a motor positioned concentrically within the core andsubstantially midway the ends thereof, an impeller fan secured to theshaft of said motor at one endI and a cage type fan secured to saidshaft at the other end and means whereby air will be drawn radiallyinwardly through the core by said fans conjointly, said cage type fanhaving a housing with one or more outlets whereby the air dischargedtherefrom may be directed to the windshield and to a remote point fromthe fan, said motor being supported by the core and having means wherebya, relatively small volume of air will be caused to pass around themotor without direct contact with the fins of the core.

2. A device as recited in claim 1 including; said core comprisingclosely spaced front and rear units, said motor support comprisingspaced annular plates positioned between the core units and having ontheir inner edges oppositely and outwardly extending funnel shapedextensions which terminate adjacent the motor and being secured theretoby means of spaced bolts and washers whereby outside air will be causedto pass around the motor forwardly and rearwardly and in contact theretoand without contact with the iins of said cores.

3. A device as recited in claim 1 including; said motor supportcomprising an annular plate being secured to the rear of said core, atube secured to said annular plate and extending inwardly and aroundsaid motor leaving a narrow air passageway therebetween and beingsecured to the motor by means of spaced fastenings, the blades of saidcage type fan having an inner diameter equal to or greater than theinner diameter of the core and being carried by a disc which is securedto the shaft of the motor, openings in said disc positioned within theinside diameter of said tube, the end of said tube positioned very closeto said disc whereby outside air will pass between said tube and motor.

m FRED M. YOUNG.

